Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4460
Number of amino acids:740
Molecular Weight:79148.06 Da
Theoretical pI:5.82


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)8611.62%
Cysteine CYS (C)91.22%
Glutamic Acid GLU (E)324.32%
Aspartic Acid ASP (D)385.14%
Glycine GLY (G)7910.68%
Phynylalanine PHE (F)324.32%
Isoleucine ILE (I)324.32%
Histidine HIS (H)172.3%
Lysine LYS (K)344.59%
Methionine MET (M)202.7%
Leucine LEU (L)527.03%
Asparagine ASN (N)344.59%
Glutamine GLN (Q)354.73%
Proline PRO (P)435.81%
Serine SER (S)456.08%
Arginine ARG (R)243.24%
Threonine THR (T)506.76%
Tryptophan TRP (W)81.08%
Valine VAL (V)415.54%
Tyrosine TYR (Y)293.92%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC3512
HydrogenH5405
NitrogenN957
OxygenO1074
SulphurS29

FormulaC3512H5405N957O1074S29
Total Number of Atoms:10977


Total number of positively charged residues (ARG + LYS):58
Total number of negatively charged residues (ASP + GLU):70
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    87710
Absorption 0.1% (=1 g/l)    1.108,   assuming all pairs of CYS residues form cystines

Ext. coefficient    87210
Absorption 0.1% (=1 g/l)    1.102,   assuming all CYS residues are reduced
Aromaticity:0.093

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 37.35

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[26.22, 27.16, 25.68]

Amino acids in helix: V, I, Y, F, W, L || Amino acids in turn: N, P, G, S || Amino acids in sheet: E, M, A, L
Aliphatic index:71.9594
Grand average of hydropathicity (GRAVY):-0.24